Add TypeScript without dependency on @types/eslint-plugin-security

[thernstig]

https://www.npmjs.com/package/@types/eslint-plugin-security exists to add types.

Would it be possible to add TypeScript declarations to this package instead, so one did not have to install this extra package?

It would make it easier to fix problems such as this, which currently occurs on the DefinitelyTyped implementation:

For reference and searchability: Unsafe member access .configs on an ``error`` typed value.eslint[@typescript-eslint/no-unsafe-member-access](https://typescript-eslint.io/rules/no-unsafe-member-access)

[nzakas]

I don't have the time to do this work but if you'd like to submit a pull request, we can definitely consider it.